/* Reset e Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background: #0a0a0a;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand h2 {
    color: #0066ff;
    font-weight: 600;
    font-size: 1.5rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #0066ff;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #0066ff;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #ffffff;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    text-align: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), rgba(0, 0, 0, 0.8));
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 2rem;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #ffffff, #0066ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: #cccccc;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-description {
    font-size: 1.1rem;
    color: #aaaaaa;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.6s both;
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #0066ff, #0052cc);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(0, 102, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 102, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #ffffff;
    border: 2px solid #ffffff;
}

.btn-secondary:hover {
    background: #ffffff;
    color: #0a0a0a;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #0066ff;
    border: 2px solid #0066ff;
}

.btn-outline:hover {
    background: #0066ff;
    color: #ffffff;
    transform: translateY(-2px);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid #ffffff;
    border-bottom: 2px solid #ffffff;
    transform: rotate(45deg);
}

/* Sections */
section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #ffffff, #0066ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #aaaaaa;
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    background: linear-gradient(135deg, #111111, #1a1a1a);
}

.about-intro {
    font-size: 1.2rem;
    color: #cccccc;
    text-align: center;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.achievements {
    display: grid;
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.achievement-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border: 1px solid rgba(0, 102, 255, 0.2);
    transition: all 0.3s ease;
}

.achievement-item:hover {
    transform: translateY(-5px);
    background: rgba(0, 102, 255, 0.1);
    border-color: rgba(0, 102, 255, 0.4);
}

.achievement-icon {
    font-size: 2rem;
    min-width: 60px;
    text-align: center;
}

.achievement-text h3 {
    color: #ffffff;
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.achievement-text p {
    color: #aaaaaa;
    line-height: 1.6;
}

/* Solutions Section */
.solutions {
    background: #0a0a0a;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.solution-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(0, 102, 255, 0.05));
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2.5rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 102, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.solution-card:hover::before {
    left: 100%;
}

.solution-card:hover {
    transform: translateY(-10px);
    border-color: rgba(0, 102, 255, 0.5);
    box-shadow: 0 20px 40px rgba(0, 102, 255, 0.2);
}

.solution-card.featured {
    background: linear-gradient(135deg, rgba(255, 102, 0, 0.1), rgba(255, 0, 0, 0.1));
    border-color: rgba(255, 102, 0, 0.3);
}

.solution-card.featured:hover {
    border-color: rgba(255, 102, 0, 0.6);
    box-shadow: 0 20px 40px rgba(255, 102, 0, 0.3);
}

.solution-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
}

.solution-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #ffffff;
}

.solution-card p {
    color: #aaaaaa;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.solution-cta {
    color: #0066ff;
    font-weight: 600;
    font-size: 1rem;
}

.solution-card.featured .solution-cta {
    color: #ff6600;
}

/* Books Section */
.books {
    background: linear-gradient(135deg, #111111, #1a1a1a);
}

.book-featured {
    max-width: 800px;
    margin: 0 auto;
}

.book-info h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #ffffff;
    text-align: center;
}

.book-description {
    font-size: 1.1rem;
    color: #cccccc;
    margin-bottom: 2rem;
    text-align: center;
    line-height: 1.7;
}

.book-features {
    list-style: none;
    margin-bottom: 2.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.book-features li {
    color: #aaaaaa;
    padding: 0.5rem 0;
    font-size: 1rem;
}

.book-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Contact Section */
.contact {
    background: #0a0a0a;
}

.contact-description {
    font-size: 1.2rem;
    color: #cccccc;
    text-align: center;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.social-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    max-width: 800px;
    margin: 0 auto;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    text-decoration: none;
    color: #ffffff;
    font-weight: 500;
    transition: all 0.3s ease;
}

.social-link:hover {
    transform: translateY(-5px);
    background: rgba(0, 102, 255, 0.1);
    border-color: rgba(0, 102, 255, 0.3);
}

.social-link svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.social-link.whatsapp:hover {
    background: rgba(37, 211, 102, 0.1);
    border-color: rgba(37, 211, 102, 0.3);
}

.social-link.linkedin:hover {
    background: rgba(0, 119, 181, 0.1);
    border-color: rgba(0, 119, 181, 0.3);
}

.social-link.twitter:hover {
    background: rgba(29, 161, 242, 0.1);
    border-color: rgba(29, 161, 242, 0.3);
}

.social-link.instagram:hover {
    background: rgba(225, 48, 108, 0.1);
    border-color: rgba(225, 48, 108, 0.3);
}

.social-link.facebook:hover {
    background: rgba(24, 119, 242, 0.1);
    border-color: rgba(24, 119, 242, 0.3);
}

.social-link.youtube:hover {
    background: rgba(255, 0, 0, 0.1);
    border-color: rgba(255, 0, 0, 0.3);
}

.social-link.github:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

.social-link.tiktok:hover {
    background: rgba(255, 0, 80, 0.1);
    border-color: rgba(255, 0, 80, 0.3);
}

.social-link.kwai:hover {
    background: rgba(255, 204, 0, 0.1);
    border-color: rgba(255, 204, 0, 0.3);
}

/* Footer */
.footer {
    background: #111111;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand h3 {
    color: #0066ff;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: #aaaaaa;
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.footer-section h4 {
    color: #ffffff;
    font-size: 1.1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #aaaaaa;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #0066ff;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: #666666;
}

/* WhatsApp Float */
.whatsapp-float {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
}

.whatsapp-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: #25d366;
    border-radius: 50%;
    color: #ffffff;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

.whatsapp-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(37, 211, 102, 0.6);
}

.whatsapp-button svg {
    width: 30px;
    height: 30px;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

@keyframes pulse {
    0% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    }
    50% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.6);
    }
    100% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }

    .solutions-grid {
        grid-template-columns: 1fr;
    }

    .social-links {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .book-buttons {
        flex-direction: column;
        align-items: center;
    }

    .whatsapp-float {
        bottom: 1rem;
        right: 1rem;
    }

    .whatsapp-button {
        width: 50px;
        height: 50px;
    }

    .whatsapp-button svg {
        width: 25px;
        height: 25px;
    }
}

@media (max-width: 480px) {
    .nav {
        padding: 1rem;
    }

    .container {
        padding: 0 15px;
    }

    section {
        padding: 3rem 0;
    }

    .achievement-item {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .solution-card {
        padding: 2rem;
    }

    .social-link {
        padding: 1rem;
    }
}

/* Scroll Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Smooth scrolling for older browsers */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}